Parents supporting parents
Your agency builds a circle around each household: staff, Champion families who have already been through it, and other foster families. A foster family whose only support is the caseworker is an island. In a circle it has other parents to ask, and a place to talk through the hard topics from training.
A circle can also carry your announcements: your staff post, and parents read and react.
Every circle is private to its members and sits behind a confidentiality agreement. Message content is encrypted at rest, and anything a parent flags reaches the moderators you name.